When Calls the Heart Abigail (Lori Loughlin) learns more about Gowen's (Martin Cummins) dangerous behavior leading up to the mine disaster in this new episode. 9 p.m. Hallmark

Black Sails As the hunt for the Urca gets under way, big changes are in store for Eleanor (Hannah New), while Bonny and Rackham (Clara Paget, Toby Schmitz) find their past misdeeds coming back to haunt them in the season finale. 9 and 10 p.m. Starz

Deion's Family Playbook Deion Sanders worries that Shilo's pursuit of music is interfering with his football playing in this new episode. 10 p.m. OWN

SPECIALS

Summer Dreams This new documentary takes viewers behind the scenes of the NBA's Summer League, an annual exhibition event where rookies and unsigned players show coaches and team managers what they can do. 8 p.m. CBS

MOVIES

Zombie Marathon The Epix premium channel is holding a mini-marathon dedicated to the sub-genre that started with 1968's "Night of the Living Dead" (6:15 and 11:30 p.m.). That's followed at 8 by "Doc of the Dead," a new documentary by filmmaker Alexandre O. Philippe. Then, at 9:30, Brad Pitt stars in 2013's "World War Z."

The Grim Sleeper Based on a true story, this new docudrama stars Dreama Walker as a Los Angeles reporter who connects the dots in dozens of unsolved murders and determines they're the work of one killer. 8 p.m. Lifetime. The new special "Beyond the Headlines: The Real Grim Sleeper" follows at 10.